SOUTH AFKICAN BAGWORMS. 139 



Fore wing- triangular ; costa slightly hollow at one-third; 

 apex well rounded ; termen nearly straight, erect, slightly 

 rounded at between 2 and 4 ; tornus well rounded ; inner 

 margin slightly lobed at one-third. 



Hind wing triangular; costa arched; apex well-rounded; 

 termen and tornus well-rounded ; inner mai'gin somewhat 

 arched. 



This subgenus comes perhaps nearest to Brachycyttarus 

 Hmpsn., but differs from it in the fore wing with a rather 

 long cell, 4 and 5 being free, and the hind wing with 8 

 anastomosing with upper median instead of connected to it by 

 a bar. 



Semimanatha fumosa sp. n. 



Male. — Head, thorax and abdomen on upper side thinly 

 covered with olive-brown (XL) hairs ; on under side with 

 white hairs ; shaft of antenna olive-brown, branches fuscous- 

 black (XL VI) ; legs with femora and tibiee covered with long 

 olive-brown hairs, tarsi with tawny-olive (XXIX) hairs; 

 fore wing and hind wing uniformly and rather densely 

 covered with olive-brown hairs ; costa of fore wing on upper 

 and under side with a narrow black line reaching to apex ; 

 underside as above, but slightly lighter ; cilia buffy-brown 

 (XL) with basal third olive-brown. 



Exp., 19 mm. 



Hab. — Pietermaritzburg (Natal), bred by C. B. Harden- 

 berg, emerged in December and January. 



Three specimens in collection Janse : type December 18th, 

 1916; cotypes December 27th, 1916, and January 2nd, 1917 

 (the latter two with abdomens missing). 



Trichocossus arvensis Janse. 



Tricliocossus arvensis Janse. Ann. Natal Miis., 1917, vol. iii, 

 pt. 3, p. 613. 



A revision of the original description is given below. 

 Male. — Head, thorax at the sides, abdomen, femora and 



